From patchwork Thu Apr 16 13:21:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 227911 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B204AC352BE for ; Thu, 16 Apr 2020 13:33:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 83C3321D91 for ; Thu, 16 Apr 2020 13:33:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587044026; bh=Dxv9GWgwYfpM4ZleMavZeL7T7rb9/AIQg6B8qLU2Pao=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=AEq6+NSTxnPRxD5hWETa/oxc0eGrR0H0DDFK4jHyiUDHTLrY926JX+WHW5r0fXyHl ccePSaXRaqo3MQxDpq9wgvCUjwEYiRQcorNCNXPiYRyZKFwdq2AYRr1F/tJV0PnWUn XafCx4veE38P4C1eYuEQzZ1Gjm0wh1gIqvfMuGqE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2896771AbgDPNdn (ORCPT ); Thu, 16 Apr 2020 09:33:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:44912 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2896749AbgDPNdk (ORCPT ); Thu, 16 Apr 2020 09:33:40 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EC980208E4; Thu, 16 Apr 2020 13:33:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587044020; bh=Dxv9GWgwYfpM4ZleMavZeL7T7rb9/AIQg6B8qLU2Pao=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LyHwonsuvtQeH9yygag5DTjDMgzcsxONJQyTs/T8dGxxyBga7Z3ffKPRVKkkPVISx n3gjzL9FMTe3qNiH0POJFxJBot7pGOdwLccswVSHhteWJsQ9OugGw91/lJoRMPsEPo 6B6TgLOgXEZflYWzjNSZ+yzv++8ukUqIBKQ4xXfw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Vladimir Oltean , Michael Walle , Mark Brown , Sasha Levin Subject: [PATCH 5.5 048/257] spi: spi-fsl-dspi: Avoid NULL pointer in dspi_slave_abort for non-DMA mode Date: Thu, 16 Apr 2020 15:21:39 +0200 Message-Id: <20200416131331.939656998@linuxfoundation.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200416131325.891903893@linuxfoundation.org> References: <20200416131325.891903893@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Vladimir Oltean [ Upstream commit 3d6224e63be39ff26cf416492cb3923cd3d07dd0 ] The driver does not create the dspi->dma structure unless operating in DSPI_DMA_MODE, so it makes sense to check for that. Fixes: f4b323905d8b ("spi: Introduce dspi_slave_abort() function for NXP's dspi SPI driver") Signed-off-by: Vladimir Oltean Tested-by: Michael Walle Link: https://lore.kernel.org/r/20200318001603.9650-8-olteanv@gmail.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-fsl-dspi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 8428b69c858bc..a534b8af27b8d 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -1021,8 +1021,10 @@ static int dspi_slave_abort(struct spi_master *master) * Terminate all pending DMA transactions for the SPI working * in SLAVE mode. */ - dmaengine_terminate_sync(dspi->dma->chan_rx); - dmaengine_terminate_sync(dspi->dma->chan_tx); + if (dspi->devtype_data->trans_mode == DSPI_DMA_MODE) { + dmaengine_terminate_sync(dspi->dma->chan_rx); + dmaengine_terminate_sync(dspi->dma->chan_tx); + } /* Clear the internal DSPI RX and TX FIFO buffers */ regmap_update_bits(dspi->regmap, SPI_MCR,